Topic
How to use your child's metered dose inhaler
💡 What You Need to Know
- Purpose of MDI: Metered Dose Inhalers deliver precise doses of medication directly to the child's airways for conditions like asthma or allergies.
- Spacer Importance: A valved holding chamber (spacer) is crucial for children, ensuring medication reaches the lungs effectively by reducing coordination challenges and minimizing oral deposition.
- Medication Types: MDIs can contain bronchodilators (rescue medication) to open airways quickly or corticosteroids (controller medication) to reduce inflammation over time.
- Regular vs. Rescue: Understand if the prescribed MDI is for daily maintenance (controller) or for immediate relief during symptom flare-ups (rescue).
🤒 Associated Symptoms
- Wheezing: A high-pitched whistling sound, especially when exhaling, indicating narrowed airways.
- Persistent Cough: A cough that is dry, hacking, or worsens at night or with activity, often a sign of airway irritation.
- Shortness of Breath: Difficulty breathing, rapid breathing, or visible effort in breathing, particularly during play or exertion.
- Chest Tightness: Children may describe this as a "heavy" or "squeezed" feeling in their chest.
- Fatigue/Irritability: Due to increased work of breathing or poor sleep quality caused by respiratory distress.
🛡 Crucial Precautions
- Shake Before Use: Always shake the MDI vigorously for 5-10 seconds before each puff to ensure proper medication mixing and consistent dosing.
- Check Dose Counter: Monitor the dose counter on the inhaler to know when it's nearing empty and needs replacement. Do not rely on sound or water tests.
- Prime New Inhaler: If the MDI is new or hasn't been used for several days, prime it by spraying a few test puffs into the air away from the face as per manufacturer instructions.
- Spacer Cleaning: Clean the spacer regularly (e.g., weekly) with warm water and mild detergent, allowing it to air dry completely without wiping to prevent static.
- Oral Hygiene: After using a corticosteroid inhaler, have the child rinse their mouth thoroughly with water and spit it out to prevent oral thrush.
- Never Share: Inhalers are prescribed for individual use and should never be shared between children or adults.
🍽 Dietary Directions & Restrictions
- Post-Inhalation Rinse: Instruct the child to rinse their mouth with water and spit after using any corticosteroid-containing metered dose inhaler to minimize the risk of oral candidiasis (thrush).
- Hydration Support: Encourage adequate fluid intake, especially water, to help thin respiratory secretions and support overall respiratory health, though not a direct restriction related to MDI use.
- Avoid Irritants: While not a direct dietary restriction, avoiding foods or drinks that trigger reflux can sometimes help reduce airway irritation in susceptible children.
⚠️ Attendant Guidelines
- Proper Positioning: Ensure the child is sitting upright or standing to maximize lung expansion during inhalation.
- Tight Seal: For spacers, ensure the child's lips form a tight seal around the mouthpiece to prevent medication leakage. For masks, ensure a snug fit over the nose and mouth.
- Slow, Deep Breath: Instruct the child to take a slow, deep breath in immediately after actuating the inhaler into the spacer, holding their breath for 5-10 seconds if possible.
- Count Breaths (for young children): For infants and toddlers using a mask with a spacer, count 5-6 slow, steady breaths after each puff.
- Wait Between Puffs: If multiple puffs are prescribed, wait at least 30-60 seconds between each puff to allow the airways to open slightly and improve subsequent medication delivery.
- Monitor Response: Observe the child for improvement in symptoms after administering rescue medication. Seek immediate medical attention if symptoms worsen or do not improve.
🩺 Physician's Perspective
- Adherence is Key: Consistent and correct use of controller medications, even when the child feels well, is vital for long-term asthma control and preventing exacerbations.
- Regular Review: Schedule regular follow-up appointments to assess asthma control, review inhaler technique, and adjust medication dosages as needed based on the child's growth and symptom patterns.
- Asthma Action Plan: Develop and review a personalized asthma action plan with the family, outlining daily management, how to handle worsening symptoms, and when to seek emergency care.
- Environmental Triggers: Advise parents on identifying and minimizing exposure to environmental triggers (e.g., dust mites, pet dander, smoke) that can worsen respiratory symptoms.
- Educate Caregivers: Ensure all primary caregivers (parents, grandparents, school nurses) are proficient in MDI use and understand the child's asthma action plan.
🎓 Academic & Nursing Corner
- Patient Education Priority: Nurses play a critical role in educating parents and children on correct MDI and spacer technique through demonstration and return demonstration.
- Developmental Considerations: Adapt teaching methods based on the child's age and developmental stage; younger children often require a mask with their spacer, while older children can use a mouthpiece.
- Assess Technique: Regularly assess and correct inhaler technique during clinic visits or hospital stays, as technique can degrade over time.
- Spacer Maintenance Teaching: Instruct families on proper cleaning and storage of spacers to ensure their effectiveness and longevity.
- Documentation: Document all patient education provided, including the specific MDI and spacer used, technique demonstrated, and the family's understanding and ability to perform the skill.
🔬 Clinical Reference Index
- Mechanism of Action: Bronchodilators (e.g., albuterol) relax smooth muscles in the airways, while corticosteroids (e.g., fluticasone) reduce inflammation and hyperresponsiveness.
- Particle Size: Optimal aerosol particle size (typically 1-5 micrometers) is crucial for effective deposition in the lower airways, which spacers help achieve.
- Propellants: Modern MDIs use hydrofluoroalkane (HFA) propellants, which are environmentally safer than older chlorofluorocarbon (CFC) propellants.
- Valved Holding Chamber (VHC): A VHC reduces the need for perfect coordination between actuation and inhalation, allowing for slower, deeper breaths and improved lung deposition.
- Inhaler Flow Rates: Unlike dry powder inhalers (DPIs) which require a strong, fast inhalation, MDIs with spacers benefit from a slow, deep inhalation.